Header Gaskets Copper Round Port 1.90 Chevrolet BBC
Highlights
- Durable Copper Construction
- Perfect Fitment
- .040" Thick
- Sold as a Pair
Copper 1.90 Round Port Header Gaskets for GM Big Block engines.
These Copper Header Gaskets (EXMG20) are for use with Chevrolet Big Block engines with 1.85” X 1.90” Rectangle Ports. Manufactured from thick, durable copper, these gaskets will offer a tight, leakproof seal. Designed for a perfect fit between the cylinder head and the header flange. Direct fit replacement, sold as a pair.
Features and Benefits:
- Copper construction
- .040” thick
- Direct fit replacement
- Sold as a pair
Tech Tip:
- These header gaskets fit Chevrolet Big Block engines with 1.90" Round Ports.
Engine Fitment:
- Chevrolet 396-454
California Residents: Proposition 65 Warning
Related Categories: C10 Exhaust Gaskets, C/K Exhaust
Only for use on pre-pollution controlled vehicles: This product can be used on vehicles that were manufactured before emissions control regulations were imposed. Pre-pollution vehicles are defined as:
- 1965 and older U.S. manufactured California certified vehicles
- 1967 and older U.S. manufactured federally certified vehicles











